| Component | Specification |
|---|---|
| Engine Oil | Screamin’ Eagle SYN3 Full Synthetic 20W50 (2.8 L) |
| Front Tire | 130/70B18 63H |
| Rear Tire | 160/70B17 73V |
| Tire Pressure (F/R) | 36 psi (2.5 bar) / 40 psi (2.8 bar) |
| Battery | 65989-97E |
| Spark Plug | 6R12 (Gap: 0.97-1.09 mm) |
The Harley-Davidson CVO Softail Deluxe (FLSTNSE) represents a pinnacle of the ‘Custom Vehicle Operations’ division’s engineering. A unique historical highlight of the 2014-2015 production run was the integration of the Screamin’ Eagle Twin Cam 110B™ engine into a chassis that maintained the classic ‘hardtail’ aesthetic of the Softail line while utilizing a counter-balanced drivetrain to mitigate the high-amplitude vibrations typically associated with large-displacement air-cooled V-twins.
Engineering Highlight: The Art-Deco Powerhouse
The FLSTNSE is not merely a chrome-laden cruiser; it is a meticulously balanced machine. By utilizing the ‘B’ variant of the Twin Cam 110 engine, Harley-Davidson engineers were able to rigid-mount the engine to the frame for increased structural integrity without sacrificing rider comfort. This model also pioneered the use of a detachable windshield with an integrated Road Tech™ zumo® 660 GPS, blending vintage Art-Deco aesthetics with modern touring utility.
Maintenance Protocol
Lubrication System
To maintain the high-performance tolerances of the 1801cc engine, MotoSpecsLab recommends the exclusive use of Screamin’ Eagle SYN3 Full Synthetic 20W50. The system requires 2.8 Liters. Regular intervals are critical, as the air-cooled 110B generates significant heat, which can shear lesser quality oils more rapidly.
Ignition and Electrical
The ignition system relies on 6R12 spark plugs. For optimal combustion efficiency and to prevent pre-detonation in the high-compression cylinders, the gap must be precisely set between 0.97 mm and 1.09 mm. The electrical system is anchored by the 65989-97E battery, which provides the necessary cold-cranking amps to turn over the massive V-twin.
Chassis and Tires
The handling characteristics of the FLSTNSE are heavily dependent on tire integrity. The front utilizes a 130/70B18 63H, while the rear features a 160/70B17 73V. Maintaining pressures at 36 psi (Front) and 40 psi (Rear) is non-negotiable for preserving the profile and ensuring safety during high-torque acceleration.
Editorial Verdict
The FLSTNSE is a masterpiece of factory-custom engineering. It offers a rare combination of ‘show-bike’ looks with ‘touring-bike’ capabilities. For the owner, adherence to the technical specifications outlined above is the only way to preserve the performance and investment value of this limited-production machine.